Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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This document was prepared by Technical Committee ISO/TC 258, Project, programme and portfolio management.

This second edition, together with ISO 21502:2020, cancels and replaces the first edition (ISO 21500:2012), which has been technically revised. The main changes compared with the previous edition are as follows:

— this document provides an overview of the environment for project, programme and portfolio management, their governance, and the general factors impacting the broader environment;
— this document provides a high-level view of the relationships among the standards on project, programme and portfolio management prepared by ISO/TC 258, while guidance on project management is now given in ISO 21502.

Any feedback or questions on this document should be directed to the user's national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

BS ISO 21500:2021

Project, programme and portfolio management. Context and concepts

Current

Published:

31 May 2023